I have an array of objects I'm trying to get out of one of my collections. I've followed along using their docs and also some Googling and I believe I'm close to the solution, however not close enough. Here's what I have:

class Clothing: Entity {

    var categories: [Category]!
    var gender: String!

    override class func collectionName() -> String {
    //return the name of the backend collection corresponding to this entity
        return "categories"
    }

    override func propertyMapping(_ map: Map) {
        super.propertyMapping(map)

        categories <- map["clothing"]
        gender <- map["gender"]

    }
}


class Category: NSObject, Mappable{

    var title: String?
    var image: String?

    convenience required init?(map: Map) {
        self.init()
    }

    func mapping(map: Map) {
        title <- map["category"]
        image <- map["image"]
    }
}

I'm able to get the right gender, but the array of categories doesn't seem to get mapped to the Category object. Any thoughts?